Symptoms of a Bad or Failing Ignition Trigger

Schedule Brake Pad Replacement
Service Area

$124.62 - $450.29

Price range for all vehicles
Average rating from 10,732 customers who received a Brake Pads Replacement.

The ignition trigger is an electronic mechanism of the vehicle’s engine management system, commonly found, in one form or another, on a large number of road going cars and trucks. Most ignition triggers operate as a magnetic sensor that is “triggered” as the unit rotates. When the mechanism is triggered, a signal is sent to the computer or ignition module, so that the ignition system can be properly timed and fired. Most ignition triggers come in the form of a magnetic hall effect sensor matched with a reluctor wheel. The components are usually located inside of the distributor, beneath the ignition rotor, or near the crankshaft pulley, sometimes with the reluctor wheel being part of the harmonic balancer. The ignition trigger serves the same purpose as the crank position sensor that is also commonly found on many road going vehicles. Both provide a vital signal that the entire engine management system relies on for proper operation. When the trigger fails or has an issue, it can cause major driveability problems, sometimes even to the point of rendering the vehicle inoperable. Usually a faulty ignition trigger will produce few symptoms that can notify the driver of the issue.

1. Car is hard to start

One of the first symptoms of an issue with the ignition trigger is problems starting the engine. If there is any issue with the ignition trigger or reluctor wheel it may compromise the signal to the computer. An incorrect trigger signal to the computer will throw off the entire engine management system, which may lead to issues when starting the engine. The engine may take more cranks to start than normal, or may require several turns of the key before firing up.

2. Check Engine Light comes on

Another symptom of a possible issue with the ignition trigger is an illuminated check engine light. Some systems will come equipped with redundant sensors that will allow the engine to run even if there is an issue with the ignition trigger. Apart from causing performance problems, any issues with the ignition trigger can be detected by the engine computer, which will set off the check engine light to notify the driver of an issue. Any vehicle with an illuminated check engine light should be (scanned for trouble codes)[https://www.yourmechanic.com/services/check-engine-light-is-on-inspection], as the check engine light can be activated by a wide number of issues.

2. Car is not starting

A no start condition is another symptom of a possible problem with the ignition trigger. Some engine management systems use the ignition trigger as the primary signal for the entire engine management system. If the trigger fails, or there is an issue, this signal may be compromised or disabled, which may produce a no start condition due to there being no base signal for the computer. A no start condition can also be caused by issues with the ignition and fuel systems, so a proper diagnosis is recommended to be sure of the issue.

Ignition triggers are found on most vehicles in one form or another, and are an important component to the proper operation and driveability of the vehicle. If you suspect that your vehicle may be having an issue with the ignition trigger have the vehicle inspected by a professional technician, such as one from YourMechanic, to determine if the trigger should be replaced.


Next Step

Schedule Brake Pad Replacement

The most popular service booked by readers of this article is Brake Pad Replacement. Yourmechanic’s technicians bring the dealership to you by performing this job at your home or office 7 days a week between 7AM-9PM. We currently cover over 10k cities and have 100k+ 5-star reviews... LEARN MORE

SEE PRICING & SCHEDULING

The statements expressed above are only for informational purposes and should be independently verified. Please see our terms of service for more details

Recent Brake Pad Replacement reviews

Excellent Rating


YourMechanic Brake Pad Replacement Service

Average Rating

4.9/5

Number of Reviews

10,732

Rating Summary
10,227
323
67
33
82
10,227
323
67
33
82

Rigoberto

9 years of experience
706 reviews
Rigoberto
9 years of experience
Chevrolet Equinox - Brake Pads Replacement (Rear) - Niles, Illinois
Rigo was great! He got there early, finished the job early, left everything clean. He changed my rear pads and rotors. The original quoted time was 90 minutes, he was done in about 60. He knows what he is doing and I am recommending him to all my friends and coworkers.
Mercedes-Benz C250 - Brake Pads Replacement (Front, Rear) - Chicago, Illinois
Rigo is a maverick hands down. Don’t take your car for work elsewhere. Especially great at Mercedes—this guy knows his profession! I will be using him for everything related to my car going forward.

Arturo

25 years of experience
35 reviews
Arturo
25 years of experience
Kia Forte - Brake Pads Replacement (Front) - San Diego, California
ARTURO is great! very professional , fast, replaced my front brake pads and oil an filter change. everything now works and works well. Brakes have much improved stopping power and engine is smooth and quiet.Arturo is also kind and thoughtful. "Your mechanic" is very fortunate to have Arturo Lopez represent your company. I enthusiastically recommend him and "Your mechanic> as a fine operation Best regards to the Team Peter Marto
Nissan Maxima - Brake Pads Replacement (Front, Rear) - San Diego, California
Arturo was prompt and completed my brake repair, including new rotors in a very efficient manner. I am very pleased with the quality of the work and the parts and will definitely look to have him service our other car in the near future.

Scott

32 years of experience
345 reviews
Scott
32 years of experience
Lexus IS250 - Brake Pads Replacement (Rear) - Denver, Colorado
Always on time, speedy, professional, and pleasant to interact with. The work is always consistent and we'll done. I can't reccomend Scott highly enough!

Michael

10 years of experience
15 reviews
Michael
10 years of experience
Nissan Sentra - Brake Pads Replacement (Front) - Conyers, Georgia
He was promptly on time and got the job done efficiently in a timely manner. I really appreciate the rapid respone on getting the job done! I would most definitely use this service again.

Need Help With Your Car?

Our certified mobile mechanics make house calls in over 2,000 U.S. cities. Fast, free online quotes for your car repair.

GET A QUOTE